Alright, let's solve this math problem step by step. First, we have the number 7. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 257. So, we're going to take the number 7 and add it to itself 257 times.
Step 1: 0 + 7 = 7
Step 2: 7 + 7 = 14
Step 3: 14 + 7 = 21
Step 4: 21 + 7 = 28
Step 5: 28 + 7 = 35
Step 6: 35 + 7 = 42
Step 7: 42 + 7 = 49
Step 8: 49 + 7 = 56
Step 9: 56 + 7 = 63
Step 10: 63 + 7 = 70
Step 11: 70 + 7 = 77
Step 12: 77 + 7 = 84
Step 13: 84 + 7 = 91
Step 14: 91 + 7 = 98
Step 15: 98 + 7 = 105
Step 16: 105 + 7 = 112
Step 17: 112 + 7 = 119
Step 18: 119 + 7 = 126
Step 19: 126 + 7 = 133
Step 20: 133 + 7 = 140
Step 21: 140 + 7 = 147
Step 22: 147 + 7 = 154
Step 23: 154 + 7 = 161
Step 24: 161 + 7 = 168
Step 25: 168 + 7 = 175
Step 26: 175 + 7 = 182
Step 27: 182 + 7 = 189
Step 28: 189 + 7 = 196
Step 29: 196 + 7 = 203
Step 30: 203 + 7 = 210
Step 31: 210 + 7 = 217
Step 32: 217 + 7 = 224
Step 33: 224 + 7 = 231
Step 34: 231 + 7 = 238
Step 35: 238 + 7 = 245
Step 36: 245 + 7 = 252
Step 37: 252 + 7 = 259
Step 38: 259 + 7 = 266
Step 39: 266 + 7 = 273
Step 40: 273 + 7 = 280
Step 41: 280 + 7 = 287
Step 42: 287 + 7 = 294
Step 43: 294 + 7 = 301
Step 44: 301 + 7 = 308
Step 45: 308 + 7 = 315
Step 46: 315 + 7 = 322
Step 47: 322 + 7 = 329
Step 48: 329 + 7 = 336
Step 49: 336 + 7 = 343
Step 50: 343 + 7 = 350
Step 51: 350 + 7 = 357
Step 52: 357 + 7 = 364
Step 53: 364 + 7 = 371
Step 54: 371 + 7 = 378
Step 55: 378 + 7 = 385
Step 56: 385 + 7 = 392
Step 57: 392 + 7 = 399
Step 58: 399 + 7 = 406
Step 59: 406 + 7 = 413
Step 60: 413 + 7 = 420
Step 61: 420 + 7 = 427
Step 62: 427 + 7 = 434
Step 63: 434 + 7 = 441
Step 64: 441 + 7 = 448
Step 65: 448 + 7 = 455
Step 66: 455 + 7 = 462
Step 67: 462 + 7 = 469
Step 68: 469 + 7 = 476
Step 69: 476 + 7 = 483
Step 70: 483 + 7 = 490
Step 71: 490 + 7 = 497
Step 72: 497 + 7 = 504
Step 73: 504 + 7 = 511
Step 74: 511 + 7 = 518
Step 75: 518 + 7 = 525
Step 76: 525 + 7 = 532
Step 77: 532 + 7 = 539
Step 78: 539 + 7 = 546
Step 79: 546 + 7 = 553
Step 80: 553 + 7 = 560
Step 81: 560 + 7 = 567
Step 82: 567 + 7 = 574
Step 83: 574 + 7 = 581
Step 84: 581 + 7 = 588
Step 85: 588 + 7 = 595
Step 86: 595 + 7 = 602
Step 87: 602 + 7 = 609
Step 88: 609 + 7 = 616
Step 89: 616 + 7 = 623
Step 90: 623 + 7 = 630
Step 91: 630 + 7 = 637
Step 92: 637 + 7 = 644
Step 93: 644 + 7 = 651
Step 94: 651 + 7 = 658
Step 95: 658 + 7 = 665
Step 96: 665 + 7 = 672
Step 97: 672 + 7 = 679
Step 98: 679 + 7 = 686
Step 99: 686 + 7 = 693
Step 100: 693 + 7 = 700
Step 101: 700 + 7 = 707
Step 102: 707 + 7 = 714
Step 103: 714 + 7 = 721
Step 104: 721 + 7 = 728
Step 105: 728 + 7 = 735
Step 106: 735 + 7 = 742
Step 107: 742 + 7 = 749
Step 108: 749 + 7 = 756
Step 109: 756 + 7 = 763
Step 110: 763 + 7 = 770
Step 111: 770 + 7 = 777
Step 112: 777 + 7 = 784
Step 113: 784 + 7 = 791
Step 114: 791 + 7 = 798
Step 115: 798 + 7 = 805
Step 116: 805 + 7 = 812
Step 117: 812 + 7 = 819
Step 118: 819 + 7 = 826
Step 119: 826 + 7 = 833
Step 120: 833 + 7 = 840
Step 121: 840 + 7 = 847
Step 122: 847 + 7 = 854
Step 123: 854 + 7 = 861
Step 124: 861 + 7 = 868
Step 125: 868 + 7 = 875
Step 126: 875 + 7 = 882
Step 127: 882 + 7 = 889
Step 128: 889 + 7 = 896
Step 129: 896 + 7 = 903
Step 130: 903 + 7 = 910
Step 131: 910 + 7 = 917
Step 132: 917 + 7 = 924
Step 133: 924 + 7 = 931
Step 134: 931 + 7 = 938
Step 135: 938 + 7 = 945
Step 136: 945 + 7 = 952
Step 137: 952 + 7 = 959
Step 138: 959 + 7 = 966
Step 139: 966 + 7 = 973
Step 140: 973 + 7 = 980
Step 141: 980 + 7 = 987
Step 142: 987 + 7 = 994
Step 143: 994 + 7 = 1001
Step 144: 1001 + 7 = 1008
Step 145: 1008 + 7 = 1015
Step 146: 1015 + 7 = 1022
Step 147: 1022 + 7 = 1029
Step 148: 1029 + 7 = 1036
Step 149: 1036 + 7 = 1043
Step 150: 1043 + 7 = 1050
Step 151: 1050 + 7 = 1057
Step 152: 1057 + 7 = 1064
Step 153: 1064 + 7 = 1071
Step 154: 1071 + 7 = 1078
Step 155: 1078 + 7 = 1085
Step 156: 1085 + 7 = 1092
Step 157: 1092 + 7 = 1099
Step 158: 1099 + 7 = 1106
Step 159: 1106 + 7 = 1113
Step 160: 1113 + 7 = 1120
Step 161: 1120 + 7 = 1127
Step 162: 1127 + 7 = 1134
Step 163: 1134 + 7 = 1141
Step 164: 1141 + 7 = 1148
Step 165: 1148 + 7 = 1155
Step 166: 1155 + 7 = 1162
Step 167: 1162 + 7 = 1169
Step 168: 1169 + 7 = 1176
Step 169: 1176 + 7 = 1183
Step 170: 1183 + 7 = 1190
Step 171: 1190 + 7 = 1197
Step 172: 1197 + 7 = 1204
Step 173: 1204 + 7 = 1211
Step 174: 1211 + 7 = 1218
Step 175: 1218 + 7 = 1225
Step 176: 1225 + 7 = 1232
Step 177: 1232 + 7 = 1239
Step 178: 1239 + 7 = 1246
Step 179: 1246 + 7 = 1253
Step 180: 1253 + 7 = 1260
Step 181: 1260 + 7 = 1267
Step 182: 1267 + 7 = 1274
Step 183: 1274 + 7 = 1281
Step 184: 1281 + 7 = 1288
Step 185: 1288 + 7 = 1295
Step 186: 1295 + 7 = 1302
Step 187: 1302 + 7 = 1309
Step 188: 1309 + 7 = 1316
Step 189: 1316 + 7 = 1323
Step 190: 1323 + 7 = 1330
Step 191: 1330 + 7 = 1337
Step 192: 1337 + 7 = 1344
Step 193: 1344 + 7 = 1351
Step 194: 1351 + 7 = 1358
Step 195: 1358 + 7 = 1365
Step 196: 1365 + 7 = 1372
Step 197: 1372 + 7 = 1379
Step 198: 1379 + 7 = 1386
Step 199: 1386 + 7 = 1393
Step 200: 1393 + 7 = 1400
Step 201: 1400 + 7 = 1407
Step 202: 1407 + 7 = 1414
Step 203: 1414 + 7 = 1421
Step 204: 1421 + 7 = 1428
Step 205: 1428 + 7 = 1435
Step 206: 1435 + 7 = 1442
Step 207: 1442 + 7 = 1449
Step 208: 1449 + 7 = 1456
Step 209: 1456 + 7 = 1463
Step 210: 1463 + 7 = 1470
Step 211: 1470 + 7 = 1477
Step 212: 1477 + 7 = 1484
Step 213: 1484 + 7 = 1491
Step 214: 1491 + 7 = 1498
Step 215: 1498 + 7 = 1505
Step 216: 1505 + 7 = 1512
Step 217: 1512 + 7 = 1519
Step 218: 1519 + 7 = 1526
Step 219: 1526 + 7 = 1533
Step 220: 1533 + 7 = 1540
Step 221: 1540 + 7 = 1547
Step 222: 1547 + 7 = 1554
Step 223: 1554 + 7 = 1561
Step 224: 1561 + 7 = 1568
Step 225: 1568 + 7 = 1575
Step 226: 1575 + 7 = 1582
Step 227: 1582 + 7 = 1589
Step 228: 1589 + 7 = 1596
Step 229: 1596 + 7 = 1603
Step 230: 1603 + 7 = 1610
Step 231: 1610 + 7 = 1617
Step 232: 1617 + 7 = 1624
Step 233: 1624 + 7 = 1631
Step 234: 1631 + 7 = 1638
Step 235: 1638 + 7 = 1645
Step 236: 1645 + 7 = 1652
Step 237: 1652 + 7 = 1659
Step 238: 1659 + 7 = 1666
Step 239: 1666 + 7 = 1673
Step 240: 1673 + 7 = 1680
Step 241: 1680 + 7 = 1687
Step 242: 1687 + 7 = 1694
Step 243: 1694 + 7 = 1701
Step 244: 1701 + 7 = 1708
Step 245: 1708 + 7 = 1715
Step 246: 1715 + 7 = 1722
Step 247: 1722 + 7 = 1729
Step 248: 1729 + 7 = 1736
Step 249: 1736 + 7 = 1743
Step 250: 1743 + 7 = 1750
Step 251: 1750 + 7 = 1757
Step 252: 1757 + 7 = 1764
Step 253: 1764 + 7 = 1771
Step 254: 1771 + 7 = 1778
Step 255: 1778 + 7 = 1785
Step 256: 1785 + 7 = 1792
Step 257: 1792 + 7 = 1799

So, 7*257 = 1799